How to Turn off all clock of STM32L0xx ?

[Ankit Yawale]

Posted on December 12, 2016 at 14:43

Hello,

I am using STM32L0xx MCU in stop mode. but can able to achieve low power as given in datasheet?

Please help me to turn off clock and also i want suggestion to achieve it.

Thank you in advance. 

#turn-off-all-clock-of-stm32l0xx

[Tesla DeLorean]

Posted on December 12, 2016 at 21:11

Watch carefully what you have the chip attached to, the state of the pins, and the current drawn by external loading on those pins.

[Ankit Yawale]

Posted on December 13, 2016 at 06:45

thank you for information.. I have achieve 1uAmp. but can't able to turn off RTC and all clocks in standby mode. Please help me in doing that.

[Walid FTITI_O]

Posted on December 13, 2016 at 15:01

Hi

Yawale.Ankit

,

As mentionned in the datasheet (STM32L073x) device you can expect the following :

– 0.43 μA Stop mode (16 wakeup lines)

– 0.86 μA Stop mode + RTC + 20 KB RAM retention

To reproduce the same power consumption value measured, you should apply the same conditions described in the '6.3.4 supply current characteristics' part.

Ensure that you keep all peripheral gated an toconfigureAll I/O pins in analog input mode before entering the low power mode.you would follow this recommandation.

You can refer either to the ready-to-use example '

PWR_STOP'

inside STM32CubeL0 at this path:STM32Cube_FW_L0_V1.7.0\Projects\STM32L073Z_EVAL\Examples\PWR\PWR_STOP

If the answer is correct, press correct.

-Walid F-

[Oliver Beirne]

Posted on December 13, 2016 at 16:13

Hi

Yawale.Ankit

I have moved this thread into the

https://community.st.com/community/stm32-community/stm32-forum?sr=search&ampsearchId=fcf13fa1-50e7-4d1e-b8a2-b556d57db114&ampsearchIndex=1

where all product related queries should go for future reference .

Thanks!

Oli